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Integrals Don’t Have Anything to Do with Discrete Math, Do They?
P. Mark Kayll
Vol. 84, No. 2 (April 2011), pp. 108-119
Published by: Mathematical Association of America
Stable URL: http://www.jstor.org/stable/10.4169/math.mag.84.2.108
Page Count: 12
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Summary To students just beginning their study of mathematics, the discipline appears to come in two distinct flavours: continuous and discrete. This article attempts to bridge the apparent divide by describing a surprising connection between these ostensible opposites. Various inhabitants from both worlds make appearances: rook polynomials, Euler’s gamma function, derangements, and the Gaussian density. Uncloaking combinatorial proof of an integral identity serves as a thread tying these notions together.
Copyright the Mathematical Association of America 2011